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XR6/XR3 Operations and Maintenance Manual

Operating the transmitter

Page 2-30

Issue 3.1   2013-03-14

Press the 

Cancel

 button to cancel the request, leaving your transmitter settings intact, or press the 

Confirm

 button to restore the factory settings.

CAUTION: 
This action cannot be undone

Содержание XR6

Страница 1: ...XR6 XR3 Transmitter Operations and Maintenance Manual Document NHB XR3 XR6 OPS Issue 3 1 2013 03 14 Status Standard...

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Страница 3: ...Fax 1 207 947 3693 Customer Service 24 hour support 1 877 628 8353 Canada USA only 1 902 823 5100 International Email support nautel com Web www nautel com The comparisons and other information provi...

Страница 4: ......

Страница 5: ...ds 1 xii Safety Precautions xiii Personal Safety 1 xiii Site Safety 1 xiv Equipment Safety 1 xvi Description 1 1 Ac dc power stage 1 1 Exciter stage 1 2 RF power stage 1 4 RF output filter 1 5 Control...

Страница 6: ...ng the event log 3 1 Viewing the event log 3 1 Clearing the event log 3 6 Event log messages 3 7 Routine maintenance 4 1 Scheduled maintenance 4 1 Replacing air filter 4 2 Performing on air checks 4 3...

Страница 7: ...cted during a troubleshooting task see Section 5 Test and adjustment on page 5 1 Performing procedures When using procedures in this manual perform each step in sequence If you are asked to see anothe...

Страница 8: ...nty information see Pre installation assistance on page 11 1 of the XR6 XR3 Pre Installation Manual For extended warranty information see Pre installation assistance on page 11 1 of the XR6 XR3 Pre In...

Страница 9: ...el User Group NUG The website includes a special section that customers can log into in order to access the Nautel customer newsletter product manuals frequently asked questions FAQ information sheets...

Страница 10: ...XR6 XR3 Operations and Maintenance Manual Page x Issue 3 1 2013 03 14...

Страница 11: ...xcess of 72 volts capable of causing a fatal electrical shock are present on or near parts bearing this label Mount the transmitter ac power disconnect switch breaker close to the transmitter so that...

Страница 12: ...These devices are specifically identified with BeO in the Description column of the Troubleshooting Manual s parts list s Do not cut crush or grind devices because the resulting dust may be hazardous...

Страница 13: ...umber of training courses covering the basic fundamentals of RF systems and transmitters and the operation and maintenance of the transmitter For more information about available courses and schedules...

Страница 14: ...d Nautel does not offer first aid training since the hazards associated with high voltage and RF energy are not specific to the transmitter However the customer should provide first aid training to al...

Страница 15: ...ularly near the feedline antenna and tower At some sites these fields may cause biological effects including the heating of body tissues Intense fields can also create dangerous high voltages on ungro...

Страница 16: ...ng any exposed components Provide a grounding wand or known ground e g a grounded metal table that personnel can use to discharge themselves Surge Protection Surge protection is recommended for your e...

Страница 17: ...r Do not place the transmitter under water pipes drains or sprinklers Keep any equipment that generates heat like the transmitter away from flammable materials like ceiling panels cubicle dividers and...

Страница 18: ...XR6 XR3 OPERATIONS AND MAINTENANCE MANUAL PAGE XVIII VERSION 3 1 2013 03 14...

Страница 19: ...cated at the end of the XR6 XR3 Troubleshooting Manual Redundancy The XR6 XR3 features redundancy in all key systems RF power modules optional fully redundant backup is available Exciters Cooling fans...

Страница 20: ...In single phase XR3 transmitters there are also four levels 220 V 196 V 115 V and 69 V Ac power transformer The XR6 XR3 s power transformer can be set to use a range of input voltages See Section 3 In...

Страница 21: ...A and Fc B The Fc A and Fc B signals are provided to the RF drive buffer PWB via the exciter interface PWB The RF synthesizer PWBs also provide signals at twice the pulse duration switching frequency...

Страница 22: ...the interphase PDM driver PWB RF drive buffer PWB The RF drive buffer PWB A15 buffers the carrier frequency signal Fc generated by the active RF synthesizer PWB A or B to provide the RF drive voltage...

Страница 23: ...lter NOTE The XR6 XR3 has one optionally two RF power modules Each RF power module has two parallel inductors in the combiner RF Power Module 1 RF 1 A Spark Gap Shutback A4 Forward Reflected Power Pro...

Страница 24: ...monitoring and RF power stage status information is applied to the control monitor stage Based on the value and status of each input the control monitor stage produces the appropriate control signals...

Страница 25: ...ERFACE EXCITER STAGE PWB REMOTE PWB BUFFER INTERFACE ETHERNET PWB DISTRIBUTION B P S AC DC RF POWER RF POWER STAGE PDM DRIVER PDM DRIVER INTERPHASE RF PWB A PWB EXCITER INTERFACE RF DRIVE MODULE OPTIO...

Страница 26: ...9 Changing general settings see page 2 10 Controlling presets see page 2 10 Changing power preset schedules see page 2 12 Changing meter groups see page 2 14 Viewing digital meters see page 2 14 Setti...

Страница 27: ...GUI provides soft menus that change depending on the information screen being displayed and the transmitter s status CHECKSUM error screen 1 In the unlikely event that the CHECKSUM error screen appear...

Страница 28: ...t to change the hardware settings press the Continue button to proceed Otherwise press the Back button to return to the Main Menu page GUI pages Table 2 1 defines the available GUI pages Table 2 1 GUI...

Страница 29: ...2 21 Calibrate Meters Calibrate the digital meters available in the GUI page 2 24 Set Thresholds Change the thresholds that protect the transmitter page 2 22 Calibrate Analog Meter Calibrate the analo...

Страница 30: ...de In the Select mode press the desired Soft Keys to move the cursor the selected area of the screen and scroll through lists or menus You can use the Up and Down buttons to scroll through information...

Страница 31: ...ower modules on page 2 8 Select Automation control to change the settings for auto exciter switchover and the power scheduler see Changing automation settings on page 2 9 Select Software version to vi...

Страница 32: ...tive cutbacks and reduce the estimated soft start relay temperature to 150 C 302 F if it is over that temperature Press the Back button to return to the Meters page Note The software keeps track of th...

Страница 33: ...red Config option The possible combinations are Module A enabled with module B on standby Module B enabled with module A on standby The Current Status line displays the currently enabled module s If n...

Страница 34: ...de value and pressing the Edit button You can then use the Up or Down buttons to change the setting to Manual or Auto Auto Scheduler mode In Auto Scheduler mode the scheduler controls which preset is...

Страница 35: ...ling presets see page 2 10 Changing meter groups see page 2 14 Adjusting screen contrast see page 2 20 Changing hardware settings see page 2 20 Press the Back button to return to the Main Menu see Mai...

Страница 36: ...power monitor gain or main power module Then press the Edit button to alter the selected setting Your changes take effect immediately For example if you change the RF power monitor gain the RF power...

Страница 37: ...ied by an animated arrow and the text Different indicating that there is a difference between the active power level and the preset s stored power level Press the Set Power button to store the current...

Страница 38: ...moves to the preset s time Use the Up and Down buttons to increase or decrease the start time for the preset The time is in 24 hour format For example 06 00 is 6 a m and 18 00 is 6 p m Press the Clear...

Страница 39: ...the Edit button to highlight the current selection and press the Up and Down buttons to scroll through the available meters Press the Save button to save your changes Press the Cancel button to rever...

Страница 40: ...UI Figure 2 10 Meters page Press the Up or Down buttons to scroll to different meters Press the Menu button to go to the Main Menu If an alarm is active a Status button appears Press the Status button...

Страница 41: ...the cursor over the fields from left to right to highlight a value To change the highlighted value press the Edit button then press the Up or Down button to increase or decrease the value Press the S...

Страница 42: ...a 30 day period for the previously set value of Current RTC Calibration Delta 30 day Correction Displays the difference between the Previous 30 day Correction and the Effective 30 day Correction to f...

Страница 43: ...If the XR6 XR3 s clock lost time on the standard the Delta 30 day Correction value should be positive 4 Press the Save button to store the calibration value 5 Reset the XR6 XR3 s clock according to th...

Страница 44: ...ge shows the release number and the date of the release The right side of the page shows information about the individual components in the current release Press the Refresh button to update the value...

Страница 45: ...the setting Changing hardware settings You can set thresholds calibrate digital and analog meters and restore factory settings using the Hardware Settings menu To view the Hardware Settings menu selec...

Страница 46: ...s see page 2 27 Setting high power lockout limit see page 2 27 Configuring NxLink optional see page 2 31 Press the Back button to return to the General Settings menu If you select Factory Settings a w...

Страница 47: ...dc offset used to zero the transmitter s RF cur rent probe Carrier Ramp Up Interval Sets the interval in tenths of seconds for the transmitter to ramp up to its maximum carrier reference value after...

Страница 48: ...To change a threshold select the threshold and press the Edit button Press the Up and Down buttons to change the threshold value For future reference record the threshold value before and after makin...

Страница 49: ...after the change for future reference Calibrating analog meter You can recalibrate the XR6 XR3 s analog forward power meter if necessary using the Calibrate Analog Meter page Note The transmitter is c...

Страница 50: ...Up and Down buttons to select Half Scale Meter Reading Press the Edit button then press the Up and Down buttons to adjust the digital value until it reads exactly the same as the pointer Press the Sa...

Страница 51: ...ess the Save button to save your calibration Pressing the Cancel button discards your changes CAUTION Do not calibrate B thresholds unless specifically instructed by Nautel personnel Decreasing the Re...

Страница 52: ...Ref Limit values The PDM A and B values represent the current duty cycle of the PDM drive signal B switching typically occurs at a duty cycle of approximately 40 To recalibrate the B switching points...

Страница 53: ...ue to the same value as the Current Carrier Reference Press the Save button to save your setting Pressing the Cancel button discards your changes 4 Use the Up and Down buttons to select High Power Loc...

Страница 54: ...s asking you to confirm that you wish to proceed Figure 2 24 Factory Settings warning page Note The Factory Settings menu is available only when operating in Local mode 10 18 0 00kW M 1 B 1 PM A Man E...

Страница 55: ...Operating the transmitter Page 2 30 Issue 3 1 2013 03 14 Press the Cancel button to cancel the request leaving your transmitter settings intact or press the Confirm button to restore the factory sett...

Страница 56: ...Down buttons to select IP Address Netmask Gateway or DNS Server DHCP d Address is not a selectable field The address is automatically assigned when the NxLink is connected to a LAN if DHCP is availabl...

Страница 57: ...XR6 XR3 Operations and Maintenance Manual Operating the transmitter Page 2 32 Issue 3 1 2013 03 14...

Страница 58: ...Log page The Events Log page shows a list of recent faults and other events The second line of the page shows the total number of events in the log the number of alarms and the index number of the eve...

Страница 59: ...ars in the bottom right corner of the page showing the page number and the total number of available event pages Press the Next Event button to view the next event in the list This keeps you on the sa...

Страница 60: ...x A Man 001 24Oct06 10 48 43 LVPS Fault RF Power Off Fwd Power 0 00kW Control Local Shutback Yes Exciter A Man B 1 PM A Man Preset M 1 Use Up Dn Keys to view event data 1 5 Next Event Back 10 18 0 00k...

Страница 61: ...0 0V PA Volt P S 0 0V 15 Volt P S 0 0V RF Drive P S 0 0V 15 Volt P S 0 0V Fan P S 0 0V 5 Volt P S 0 00V Use Up Dn Keys to view event data 3 5 Next Event Back 10 18 0 00kW M 1 B 1 PM A Man Ex A Man 00...

Страница 62: ...t Page 5 10 18 0 00kW M 1 B 1 PM A Man Ex A Man 001 24Oct06 10 48 43 LVPS Fault LVPS Fault Cutback Level 0 Use Up Dn Keys to view event data 5 5 Next Event Back 10 18 0 00kW M 1 B 1 PM A Man Ex A Man...

Страница 63: ...nts of the Events Log press the Clear Log button A warning screen will appear Figure 3 7 Clear Log Warning page Press the Continue button to clear the log or press the Back button to return to the Mai...

Страница 64: ...the Preset Scheduler have been enabled Command Manual Power Automatic Preset changes using the Preset Scheduler have been disabled Command Exciter A Changeover to Exciter A Command Exciter B Changeov...

Страница 65: ...XR6 XR3 Operations and Maintenance Manual Using the event log Page 3 8 Issue 3 1 2013 03 14...

Страница 66: ...isits is three months Local operating and environmental conditions may dictate more frequent visits while in remote sites less frequent visits may be acceptable Experience and system reliability will...

Страница 67: ...B contains a battery backup circuit that provides a memory of alarm occurrences during ac power failure See Replacing the control display PWB battery on page 4 3 Replacing air filter In order to maint...

Страница 68: ...on scheme used on the transmitter A spectrum analyzer if one is available Procedure 1 Monitor the transmitter signal to identify any problems Use a high quality receiver to monitor audio quality Check...

Страница 69: ...e control display PWB See Figure MD 3 in the mechanical drawings section at the end of the XR6 XR3 Troubleshooting Manual 4 Close the front panel 5 Check for any alarms on the graphic user interface S...

Страница 70: ...tor and ground available on various pieces of equipment connected to the transmitter Ensure that there is no resistance 0 ohms 2 Physically inspect the lightning arrestor to ensure that all connection...

Страница 71: ...XR6 XR3 Operations and Maintenance Manual Routine maintenance Page 4 6 Issue 3 1 2013 03 14...

Страница 72: ...mpact a specific adjustment can have on other steps These adjustments should be performed during initial turn on and after major repairs or a frequency change Test equipment required To perform the pr...

Страница 73: ...tion checks Verify that the RF output is appropriately modulated when audio is applied 1 Connect an appropriate modulation monitor to the remote interface PWB RF MONITOR connector J8 The modulation mo...

Страница 74: ...on is required it is recommended the AUDIO GAIN potentiometer on the interphase PDM driver PWBs be left at the factory setting 8 If the program audio cannot be set to 10 dBm when 100 modulation is req...

Страница 75: ...t exciter A as the active exciter 2 Connect an oscilloscope to BNC connector J5 RF DRIVE TEST on the RF drive buffer PWB 3 The oscilloscope should indicate a symmetrical 50 duty cycle square wave with...

Страница 76: ...ow frequency long duration high amplitude peaks Verify the modulation peaks are limited as follows 1 Connect an oscilloscope between TP7 and ground on the remote interface PWB 2 Connect an audio signa...

Страница 77: ...XR6 XR3 Operations and Maintenance Manual Test and adjustment Page 5 6 Issue 3 1 2013 03 14 Figure 5 1 Chopper Control Waveform Audio 30Hz AC Coupled...

Страница 78: ...enna B The high voltage dc generated by the transmitter s ac power supply for use within the transmitter The B voltage is used to supply the transmitter s modulators and other transmitter circuitry Cu...

Страница 79: ...o six presets Shutback A complete loss of RF output power caused by any one of a variety of faults including high VSWR low B voltage high RF current RF drive failure external interlock or spark gap Su...

Страница 80: ...dware settings 2 20 Changing meter groups 2 14 Checking hardware 4 2 Checks on air 4 3 Checksum error 2 2 Cleaning 4 1 Clearing the event log 3 6 Clock setting 2 16 Control monitor stage block diagram...

Страница 81: ...air filters 4 2 Restoring factory settings 2 27 RF drive buffer PWB functional description 1 4 RF drive symmetry 5 4 RF output filter functional description 1 5 RF power blocks functional description...

Страница 82: ......

Страница 83: ...e 1 877 6NAUTEL 662 8835 Canada USA only or Phone 1 902 823 3900 or Fax 1 902 823 3183 Nautel Inc 201 Target Industrial Circle Bangor Maine USA 04401 Phone 1 207 947 8200 Fax 1 207 947 3693 Customer S...

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